JV
James Vaughan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this James Vaughan across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed), with identified parents Arthur & Arthur — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Vaughan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Lincoln Twp |
| 1935 Residence (County) | Blackhawk |
| Additional Details | |
| Occupation | farm laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Laborer |
| Township / Ward | Lincoln Twp |
| Est. Birth Year | ~1919 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Stacey Vaughan | Spouse | — | 50 | ~1890 |
| Nellie Lydell | Other | — | 74 | ~1866 |
| James Vaughan | Son | — | 21 | ~1919 |
| Arthur Vaughan | Head | — | 68 | ~1872 |
Census Appearances
1920
Black Hawk, …
Son, age 1
Black Hawk, Iowa · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | James M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Nebraska |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Son, age 11
Black Hawk, Iowa · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Son, age 21
Black-Hawk-County, Iowa · implied b. ~1919 — 4 household members
| Surname | Vaughan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Lincoln Twp |
| 1935 Residence (County) | Blackhawk |
| Occupation | farm laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links James Vaughan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Vaughan (~0.92 confidence) and father Arthur Vaughan (~0.92 confidence) and mother Daisy Vaughan (~0.92 confidence) and mother Stacey Vaughan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Vaughan
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Arthur Vaughan
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Daisy Vaughan
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Stacey Vaughan
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Vaughan
Son · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-00607)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nels Petersen | 62 | Head | Farm Operator | Denmark |
| 2 | Jim Chris Anderson | 51 | Head | Farm Operator | Denmark |
| 3 | Jennie Anderson | 36 | Wife | — | Denmark |
| 4 | Margaret Anderson | 17 | Daughter | — | Iowa |
| 5 | Helen Anderson | 14 | Daughter | — | Iowa |
| 6 | Brother Laursen | 46 | Brother | Farm Laborer | Denmark |
| 7 | Frank Kubik | 27 | Head | Farm Operator | Iowa |
| 8 | Christina Kubik | 22 | Wife | — | Iowa |
| 9 | Joe Jr Kubik | 31 | Head | Farm Operator | Iowa |
| 10 | Delores Kubik | 29 | Wife | — | Iowa |
| 11 | Mary Lou Kubik | 9 | Daughter | — | Iowa |
| 12 | William Halupnick | 19 | Hired hand | Farm Laborer | Iowa |
| 13 | Joe Hegg | 48 | Head | Farm Operator | Illinois |
| 14 | Pearl Hegg | 47 | Wife | — | Iowa |
| 15 | Joe Jr Hegg | 11 | Son | — | Iowa |
| 16 | John Hegg | 8 | Son | — | Iowa |
| 17 | Carol Dee Hegg | 5 | Daughter | — | Iowa |
| 18 | Arthur Vaughan | 68 | Head | Farm Operator | Iowa |
| 19 | Stacey Vaughan | 50 | Wife | — | Nebraska |
| 20 | James Vaughan THIS PERSON | 21 | Son | Farm Laborer | Iowa |
| 21 | Nellie Lydell | 74 | Mother | — | Pennsylvania |
| 22 | Lou Weber | 56 | Head | Farm Operator | Iowa |
| 23 | John Weber | 17 | Son | Farm Laborer | Iowa |
| 24 | Joe Weber | 15 | Son | — | Iowa |
| 25 | George Clark | 64 | Hired hand | Farm Laborer | Minnesota |
| 26 | Ray Kelly | 48 | Head | Farm Operator | Iowa |
| 27 | Mark Kelly | 21 | Son | Farm Laborer | Iowa |
| 28 | Camille Kelly | 17 | Daughter | — | Iowa |
| 29 | Dale Kelly | 16 | Son | — | Iowa |
| 30 | Edward Karkosh | 20 | Head | Truck Operator | Iowa |
| 31 | Lucile Karkosh | 27 | Wife | — | Iowa |
| 32 | Floyd Luckert | 42 | Boarder | Truck Driver | Iowa |
| 33 | Edward Duffy | 62 | Head | Farm Laborer | Iowa |
| 34 | Margaret Duffy | 57 | Wife | Postmistress | Iowa |
| 35 | Gerald Duffy | 28 | Son | Manager Lumber Yard | Iowa |
| 36 | Ambrose Duffy | 26 | Son | Laborer Farm Yard | Iowa |
| 37 | Winifred Duffy | 18 | Daughter | Telephone Operator | Iowa |
| 38 | Clarence Peters | 24 | Head | Farm Operator | Iowa |
| 39 | Aletha Peters | 24 | Wife | Telephone Operator | Iowa |
| 40 | Gordon Peters | 4 | Son | — | Iowa |
Pedigree Summary
James
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)